Q1 2026 Quarterly Report (31st Fiscal Year)

Quarterly Report 6.5 LEENO Industrial Co., Ltd. 1 Y 180111-0220664 Quarterly Report (31st Fiscal Year) Fiscal Year: From January 1, 2026 to March 31, 2026 To: Financial Services Commission To: Korea Exchange Date: May 14, 2026 Filing Entity Type: Listed Stock Corporation Exemption Reason: None applicable Company Name: LEENO Industrial Co., Ltd. CEO: Lee Chae-yoon Head Office: 10, Mieumsandan-ro 105beon-gil, Gangseo-gu, Busan (Phone) 051-831-3232 (Website) https://leeno.com/kr Responsible Officer: (Title) Managing Director (Name) Choi Yong-gi (Phone) 051-831-3232 Table of Contents [Confirmation by CEO, etc.] — 1 I. Company Overview — 2 1. Company Overview — 2 2. Company History — 3 3. Changes in Capital — 4 4. Total Number of Shares, etc. — 5 5. Articles of Incorporation Matters — 6 II. Business Content — 7 1. Business Overview — 7 2. Major Products and Services — 9 3. Raw Materials and Production Facilities — 10 4. Sales and Order Status — 13 5. Risk Management and Derivative Transactions — 16 6. Major Contracts and R&D Activities — 20 7. Other Reference Items — 35 III. Financial Matters — 42 1. Summary Financial Information — 42 2. Consolidated Financial Statements — 44 3. Notes to Consolidated Financial Statements — 45 4. Financial Statements — 46 5. Notes to Financial Statements — 52 6. Dividend Matters — 121 7. Capital Raising via Securities Issuance — 124 8. Other Financial Matters — 127 IV. Directors' Management Diagnosis and Analysis Opinion — 135 V. Auditor's Audit Opinion, etc. — 137 1. External Audit Matters — 137 2. Internal Control Matters — 139 VI. Board of Directors and Corporate Bodies — 140 1. Board of Directors — 140 2. Audit System — 141 3. Shareholders' Meetings, etc. — 142 VII. Shareholders — 146 VIII. Officers and Employees — 147 1. Status of Officers and Employees — 147 2. Officer Compensation — 149 IX. Affiliated Companies — 150 X. Transactions with Major Shareholders — 151 XI. Other Matters for Investor Protection — 152 1. Progress and Changes in Disclosure Content — 152 2. Contingent Liabilities, etc. — 153 3. Sanctions and Related Matters — 154 4. Major Subsequent Events After Reporting Date — 155 XII. Detailed Tables — 156 1. Status of Consolidated Subsidiaries (Detailed) — 156 2. Status of Affiliated Companies (Detailed) — 157 3. Status of Investments in Other Entities (Detailed) — 158 [Expert Confirmation] — 159 1. Expert Confirmation — 159 2. Relationship with Expert — 159 [Confirmation by CEO, etc.] Confirmation.jpg Confirmation I. Company Overview 1. Company Overview Company overview is not included in the quarterly report per disclosure form preparation standards. (Will be included in semi-annual/annual report.) 2. Company History Company history is not included in the quarterly report per disclosure form preparation standards. (Will be included in semi-annual/annual report.) 3. Changes in Capital Changes in capital are not included in the quarterly report per disclosure form preparation standards. (Will be included in semi-annual/annual report.) 4. Total Number of Shares, etc. Not included in the quarterly report per disclosure form preparation standards. (Will be included in semi-annual/annual report.) 5. Articles of Incorporation Matters Not included in the quarterly report per disclosure form preparation standards. (Will be included in semi-annual/annual report.) II. Business Content 1. Business Overview The Company develops, manufactures, and sells under its own brand inspection PROBES (SPRING CONTACT PROBE: LEENO PIN) and semiconductor test sockets (IC TEST SOCKET), which were previously entirely dependent on imports, and also manufactures and sells medical device components applied in products such as ultrasound diagnostic equipment. [LEENO PIN & IC TEST SOCKET Segment] Based on over 40 years of experience and accumulated know-how, the Company possesses a production system capable of responding to multi-product and short-delivery demands. Additionally, the IC TEST SOCKET incorporating the LEENO PIN — first developed domestically by the Company — offers the strength of stably testing electrical/electronic components and semiconductor chips. The Company has established an in-house production system covering all processes, securing advantages in stable quality maintenance, cost competitiveness, and short lead times. Using its accumulated technological capabilities and know-how, the Company continuously strives to supply leading products that meet customer demands even in rapidly changing market environments. In overseas markets, the Company responds through various distribution methods including indirect sales via agents and direct sales to overseas local buyers. In the domestic market, it has established a strategic technical sales system, enabling rapid response from early product development through mass production. Based on Q1 2026 revenue, IC TEST SOCKETS — consumable parts for semiconductor (memory and non-memory) test packaging equipment — accounted for 64.10% of total revenue (KRW 63.9 billion: overseas exports KRW 59.6 billion, domestic KRW 4.3 billion). LEENO PINs — consumable parts that check electrical defects in semiconductors or printed circuit boards — accounted for 24.65% of total revenue (KRW 24.6 billion: overseas exports KRW 18.8 billion, domestic KRW 5.8 billion). Other merchandise accounted for 0.03% (KRW 30 million). [Medical Device Segment] The Company possesses a flexible production system capable of responding to multi-product and short-delivery demands. Based on the precision manufacturing process know-how accumulated through manufacturing LEENO PINs and IC TEST SOCKETS, the Company has secured differentiated competitiveness in the ultrasound diagnostic equipment market. [Translation truncated]